Damp-Proof Course

Damp-Proof Course

             one of the following specifications may be adopted for a damp proof course, According to the type of the construction and the nature of the ground.

• Two course of dense bricks in 1:3 cement mortar. Bricks should have a water absorption of not more than 4.5 percent. It is advantageous to leave the vertical joints unfilled moisture rises through the mortar joints.
• A Layer of well burnt bricks soaked in hot tar and pitch will suit for cheap class buildings

• Non-porous stone slab about 50 mm thick laid for the full width of the walls over a bed of cement mortar.
• Two layers of non-porous slate laid to break joints, each layer being bedded and set solidly in cement mortar 1:3
• 12 mm cement plaster 1:2 with some water -Proofing compound laid above the plinth masonry with one or two thick coats of hot coal tar applied over the mortar after the mortar has fully dried. Dry sharp sand should be sprinkled over the hot tar. Five percent of waterproofing compound used for standard mortar mix.